The perimeter of an equilateral triangle is 42cm, and the perimeter of a square is 48cm.

The perimeter of an equilateral triangle is 42cm, and the perimeter of a square is 48cm. How much larger is the side of the triangle than the side of the square.

1. Find the side of an equilateral triangle knowing that its perimeter is 42 cm:

P = 3 * a;
42 = 3 * a;
a = 42/3 = 14;

2. Find the side of the square knowing that its perimeter is 48 cm:

P = 4 * a;
48 = 4 * a;
a = 48/4 = 12;

3. Determine how much the side of the triangle is larger than the side of the square:

14 -12 = 2;

Answer: the side of the triangle is 2 cm larger than the side of the square.